CN2512107Y - Multi-electrode low voltage dual point circuit breaker with plastic casing - Google Patents
Multi-electrode low voltage dual point circuit breaker with plastic casing Download PDFInfo
- Publication number
- CN2512107Y CN2512107Y CN 01254485 CN01254485U CN2512107Y CN 2512107 Y CN2512107 Y CN 2512107Y CN 01254485 CN01254485 CN 01254485 CN 01254485 U CN01254485 U CN 01254485U CN 2512107 Y CN2512107 Y CN 2512107Y
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- CN
- China
- Prior art keywords
- plastic case
- partition wall
- voltage breaker
- double breaks
- circuit breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a multi-electrode low voltage dual point circuit breaker with plastic casing, which is characterized in that: two arc extinguish chambers of each electrode are formed by assembling relatively independent sealing units; moving contacts of each electrode are arranged on the same rotating shaft through contact supports; the contact supports are connected with an operating mechanism arranged on one of small shells through a connecting rod; an interelectrode partition wall is arranged on a big shell; a bearing for supporting the rotating shaft is arranged on the interelectrode partition wall. The utility model adopts a relatively simple structure to achieve the reliable mechanical connection and transmission among unipolar units, meanwhile, causes installation more flexible and convenient, can simplify assembly process, and reduces manufacturing cost.
Description
Technical field
The utility model relates to a kind of multipolar low-voltage breaker with double breaks and plastic case, each utmost point of circuit breaker comprises the breaking units of an one pole, the one pole breaking units has a hexagon box made from moulded plastic, contact and arc control device are supporting to be installed in the described hexagon box, several same unit is placed side by side in a big hexagon box, forms multipole circuit breaker.
Background technology
Above-mentioned breaker structure is well-known, a kind of more specifically structure is disclosed in Chinese patent literature ZL 92111529.6 " multipole circuit breaker with single pole units " specification, its moving contact is arranged in can rotating bridge-shaped contact form, it cooperates with two fixed contacts staggered relatively, bridge-shaped contact can support by rotating rod piece by one, the rod piece stretches out from the central cross of described box, and be inserted between two big side surfaces of box, can do to be parallel to limited the moving on these two big surfaces, these rod pieces of different and column unit are with two parallel connecting rod mechanical fixation, two connecting rods and crank coupling connection, operating mechanism is fixed therein the top of a unit, and it has metal rim and the described crank bottom linkage rod of driving of two described bearings of the crank pin of supporting.The action of operating mechanism drives two connecting rods by the revolution of crank, thereby passes to the bar block of each utmost point, dynamic/static contact is disconnected and connection.
The advantage of above-mentioned breaker structure is conspicuous, its bridge-shaped contact floating ground is installed on the rod piece, adopt two connecting rods to reach the mechanical connection of rigidity between the different bars, thereby realized the reliably working of each interpolar of circuit breaker, the defective of manufacturing compensates by means of the minim gap between bar block and the box.Yet, realize the consistency of different units configuration, different poles is touched bridge support connection and realized touching bridge gauge gyration then, the related components accuracy of manufacture and assembly precision are vital, otherwise, each is extremely asynchronous owing to manufacturing and rigging error cause, and being delivered to each pole moment loss of both sides etc. all can influence the circuit breaker function and realize.
Summary of the invention
To be solved in the utility model is that the manufacturing to product requires height in the prior art, structure is complicated problems comparatively, aim to provide a kind of follow-on multipolar low-voltage breaker with double breaks and plastic case, it adopts simple relatively structure, reaches mechanical connection and transmission reliably between each single pole units.The technical scheme that solves the problems of the technologies described above employing is: a kind of multipolar low-voltage breaker with double breaks and plastic case, have two hexagonal boxes of size, comprise two fixed contacts in the small shell, rotary type bridge shape moving contact, and with the arc control device of the supporting setting of each contact, constitute the utmost point of circuit breaker; A plurality of small shells are arranged side by side in big housing, constitute each utmost point of multipole circuit breaker; Its feature is that two arc control device of every utmost point are made of relatively independent sealing unit assembling, and two two facing surfaces are arc surface, and the assembling back forms a circular chamber relatively; The moving contact of each utmost point is arranged in the same rotating shaft by the contact support, and described contact support is arranged in the described circular chamber, and the contact support links to each other with operating mechanism on being arranged on one of them small shell by a connecting rod; Big housing is provided with the interpolar partition wall, and described partition wall is provided with the bearing of the described rotating shaft of supporting.
Multipolar low-voltage breaker with double breaks and plastic case of the present utility model, operating mechanism directly drives rotating shaft by a connecting rod, the synchronism of different poles, the transmission effect of power and touch the bridge movement velocity and obviously improve, simultaneously, because of having reduced the one-level transmission, amount of parts has reduced, and can reduce manufacturing cost.Its another characteristics are: two arc control device of every utmost point are relatively independent, by being assembled into a utmost point to inserting mode; Usually arc control device can be used riveted joint by two half symmetrical sheet boxes, and bonding or other mode commonly used is formed by connecting, because each arc control device is made separately, make that the connection between double box of phase is more reliable, can improve the sealing property of arc control device.Its another characteristics are moving contact, contact support and rotating shaft integrated designs of each utmost point, install more flexible and convenience, can simplify assembly technology.
Be respectively equipped with band otch annular seal sheet on the two side of the circular chamber of each utmost point, the gases at high pressure that leak in the circular chamber when preventing the electric arc disjunction leak.Diaphragm seal is for band otch annular, so that diaphragm seal can be snapped in the rotating shaft from incision.The diaphragm seal that is positioned at the circuit breaker two ends also can be with otch, makes sealing effectiveness better.
There is small gap in this structure between described contact support and the circular chamber, is convenient to contact and is supported in rotation flexibly in the circular chamber, and this gap should be enough little simultaneously, prevents that arcing chamber inner high voltage gas is to circular chamber's internal leakage.
This structure, the rotating shaft of contact support is arranged on the bearing of interpolar partition wall, described bearing is made of two half-and-half bearings up and down, bottom half-bearing is to utilize the partition wall body to form semicircle bearing pedestal, last half-and-half bearing is made of a bearing cap, described bearing cap is convenient to install and change by plugging mode and described bearing pedestal detachable connection, but and simplified structure.Rotating shaft adopts BMC or SMC stage die compression molding material to make, and heat resistance is good, and because the property of material itself, rotating shaft forms a smooth wear-resistant surface at bearing surface rotate a period of time in bearing after, and radial journal bearing rotates flexibly and reliably.Preferably big small shell, contact support and rotating shaft all adopt BMC or SMC stage die compression molding material to make, and to improve the whole heat resistance of circuit breaker, prolong the useful life of complete machine.
This structure also is provided with the overvoltage actuating mechanism on the described interpolar partition wall, and it comprises housing, is provided with the gas collecting chamber in the described housing, and described gas collecting chamber is communicated with adjacent one pole by passage; Also be provided with the bar of beating of relative configuration with described operating mechanism on described gas collecting chamber, it can be reacted when the overvoltage in the gas collecting chamber surpasses a predetermined threshold, and control operation mechanism makes circuit breaker trip.Also be provided with check-valves in described gas collecting chamber and the passage that adjacent one pole links to each other.
Description of drawings
Fig. 1 is the structural representation of the utility model circuit breaker.
Fig. 2 be three single-pole devices abandon the dress before the part-structure schematic diagram.
Fig. 3 is the structural representation of single-pole device.
Fig. 4 is the structural representation after the half of box of single-pole device arc control device is opened.
Fig. 5 is the structural representation of the utility model moving contact of breaker-rotating assembly.
Fig. 6 is unkitted the rotating shaft schematic diagram that diaphragm seal band contact is supported.
Fig. 7 is the structural representation of base.
Fig. 8, the 9th, the structural representation of diaphragm seal.
Figure 10 is the axonometric drawing of overvoltage actuating mechanism.
Figure 11 is the cutaway view of overvoltage actuating mechanism.
Embodiment
With reference to accompanying drawing, comprise three single pole units in the big housing 23 of multipolar low-voltage breaker with double breaks and plastic case, each single pole units comprises a hexahedron small shell, the rotary type bridge shape moving contact 12 that be provided with two fixed contacts 4,5 in the small shell, matches with fixed contact 4,5 and with the arc control device 8,9 of the supporting setting of each contact, constitute the utmost point 1 of circuit breaker.A plurality of small shells are arranged side by side in big housing, constitute each utmost point of multipole circuit breaker.Above a middle utmost point, be provided with an operating mechanism 19.
Each small shell is made of inserting by seam (51,52) location two relatively independent arc control device 8,9, and two two facing surfaces are arc surface 16,17, and the assembling back forms a circular chamber 18 relatively.The housing of arc control device 8 is by two basic symmetrical side plates 2 and 3 involutory backs are riveted or other connected mode forms, a supporting fixed contact 4 and arc-chute of being provided with in it; The housing of arc control device 9 by the buckles 2 of two basic symmetries ' and 3 ' involutory back riveted joint or other connected mode form a supporting fixed contact 5, an arc-chute 7 and connecting plate 6 of being provided with in it.
The moving contact 12 of each utmost point is arranged in the same rotating shaft 11 by contact support 22, and rotating shaft and contact support that there is cannelure the junction, and the rotating shaft of integrated design adopts BMC or SMC stage die compression molding material to make, to improve the whole heat resistance of circuit breaker.The contact support 22 of each utmost point is arranged in the corresponding circular chamber 18, there is a small gap between contact support 22 and the circular chamber 18, both guaranteed that contact support 22 can rotate therein flexibly, this gap is enough little again simultaneously, prevents that arc control device inner high voltage gas is to circular chamber's 18 internal leakages.Connecting rod passes the through hole of offering in the contact support vertically, do not interspace, then be arranged on the interpole small shell on operating mechanism 19 link to each other.
Big housing 23 adopts PBT or PA46 engineering plastics, is hexahedron, and top is by two- layer lid 41,42 sealings, and handle 43 passes the hole from middle one deck lid 41.Big housing 23 is provided with interpolar partition wall 40, is provided with the bearing of the described rotating shaft 11 of supporting on partition wall 40.Bearing can adopt any standard bearing that is fit to this structure, in the embodiment of an optimization, bearing is made of two half-and-half bearings up and down, bottom half-bearing is to utilize the partition wall body to form semicircle bearing pedestal 13, last half-and-half bearing is made of a bearing cap 14, and described bearing cap 14 is by plugging mode and 13 detachable connections of described bearing pedestal.
On the two side of the circular chamber of each utmost point, be respectively equipped with band otch annular seal sheet, the gases at high pressure that leak into when preventing the electric arc disjunction in the circular chamber 18 leak, diaphragm seal 10a has the hole that connecting rod passes, and diaphragm seal can be snapped in contact from otch 21 and support in the groove 53 of rotating shaft of both sides.The diaphragm seal 10b that is positioned at the circuit breaker two ends is not with holes, makes sealing effectiveness better.
On the interpolar partition wall, also be provided with overvoltage actuating mechanism 15, housing can adopt single plate-like form, one side is opened, and the tight card of opposite side is incorporated on the adjacent single-pole device 1, also can adopt the form of box, in a preferred embodiment, employing be the latter's structure, it constitutes by two boards 31,35 is involutory.Be provided with gas collecting chamber 30 in the described housing, described gas collecting chamber 30 is communicated with adjacent one pole 1 by passage 32; On described gas collecting chamber 30, also be provided with and make bar 34, it adopts the piston form to cooperate with gas collecting chamber 30, can when surpassing a predetermined threshold, the overvoltage in the gas collecting chamber 30 react, at state shown in Figure 8, overvoltage gas is pushed open along the direction of arrow and is made bar 34, make bar 34 and stir snap close 20 drive operating mechanisms 19 actions of control operation mechanism 19, make circuit breaker trip.Also be provided with the spring (not shown) at the back of making bar 34, push disengaged position shown in Figure 9 to making bar 34.Also be provided with check-valves 36 in gas collecting chamber 30 and the passage 32 that adjacent one pole 1 links to each other, prevent that gas is back in the single-pole device 1 from gas collecting chamber 30.
Each overvoltage actuating mechanism is the equal conducting of adjacent single-pole device with both sides simultaneously, also can be the equal conducting of adjacent single-pole device with both sides simultaneously of an overvoltage actuating mechanism, and the adjacent single-pole device conducting of another overvoltage actuating mechanism and opposite side.
Claims (10)
1, a kind of multipolar low-voltage breaker with double breaks and plastic case, have two hexagonal boxes of size, comprise two fixed contacts (4,5) in the small shell, rotary type bridge shape moving contact (12), and with the arc control device of the supporting setting of each contact, constitute the utmost point (1) of circuit breaker; A plurality of small shells are arranged side by side in big housing, constitute each utmost point of multipole circuit breaker; It is characterized in that:
Two arc control device (8,9) of every utmost point are made of relatively independent sealing unit assembling, and two two facing surfaces are arc surface (16,17), and the assembling back forms a circular chamber (18) relatively;
The moving contact of each utmost point is arranged in the same rotating shaft (11) by contact support (22), described contact support (22) is arranged in the described circular chamber (18), and contact support (22) links to each other with operating mechanism (19) on being arranged on one of them small shell by a connecting rod;
Big housing is provided with interpolar partition wall (40), and described partition wall is provided with the bearing of the described rotating shaft of supporting.
2, multipolar low-voltage breaker with double breaks and plastic case as claimed in claim 1, it is characterized in that also being provided with on the sidewall of described circular chamber (18) diaphragm seal that prevents gases at high pressure and leak (10a, 10b).
3, multipolar low-voltage breaker with double breaks and plastic case as claimed in claim 2 is characterized in that (10a 10b) is band otch annular to described diaphragm seal.
4, multipolar low-voltage breaker with double breaks and plastic case as claimed in claim 1 or 2 is characterized in that having small gap between described contact support (22) and the circular chamber (18).
5, multipolar low-voltage breaker with double breaks and plastic case as claimed in claim 4, it is characterized in that the bearing on the described partition wall (40) is made of a semicircle bearing pedestal (13) that utilizes the partition wall body to form and a bearing cap (14), described bearing cap (14) is by plugging mode and described partition wall (40) detachable connection.
6, multipolar low-voltage breaker with double breaks and plastic case as claimed in claim 5 is characterized in that described operating mechanism (19) is arranged on the top of a middle minimum housing.
7, multipolar low-voltage breaker with double breaks and plastic case as claimed in claim 6 is characterized in that described big small shell adopts PBT, PA46, and BMC, the SMC engineering plastics are made.
8, multipolar low-voltage breaker with double breaks and plastic case as claimed in claim 7 is characterized in that described contact support and rotating shaft adopt BMC or SMC stage die compression molding material to make.
9, multipolar low-voltage breaker with double breaks and plastic case as claimed in claim 1, it is characterized in that also being provided with on the described interpolar partition wall overvoltage actuating mechanism (15), it comprises housing, be provided with gas collecting chamber (30) in the described housing, described gas collecting chamber (30) is communicated with adjacent one pole 1 by passage (32); What also be provided with configuration relative with described operating mechanism (19) on described gas collecting chamber (30) makes bar (34), and it can be reacted during above a predetermined threshold in the overvoltage in the gas collecting chamber (30), and control operation mechanism (19) makes circuit breaker trip.
10, multipolar low-voltage breaker with double breaks and plastic case as claimed in claim 9 is characterized in that also being provided with check-valves (36) in described gas collecting chamber (30) and the passage (32) that adjacent one pole (1) links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01254485 CN2512107Y (en) | 2001-10-30 | 2001-10-30 | Multi-electrode low voltage dual point circuit breaker with plastic casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01254485 CN2512107Y (en) | 2001-10-30 | 2001-10-30 | Multi-electrode low voltage dual point circuit breaker with plastic casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2512107Y true CN2512107Y (en) | 2002-09-18 |
Family
ID=33663791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01254485 Expired - Lifetime CN2512107Y (en) | 2001-10-30 | 2001-10-30 | Multi-electrode low voltage dual point circuit breaker with plastic casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2512107Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101868839B (en) * | 2007-11-21 | 2013-06-12 | Abb公司 | Arc gas exhaust passage for a circuit breaker with a double break contact arrangement |
| CN107622887A (en) * | 2016-07-13 | 2018-01-23 | 西门子公司 | For the pole case of electric switch and the electric switch with pole case |
-
2001
- 2001-10-30 CN CN 01254485 patent/CN2512107Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101868839B (en) * | 2007-11-21 | 2013-06-12 | Abb公司 | Arc gas exhaust passage for a circuit breaker with a double break contact arrangement |
| CN107622887A (en) * | 2016-07-13 | 2018-01-23 | 西门子公司 | For the pole case of electric switch and the electric switch with pole case |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20050921 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |